大约有 5,213 项符合查询结果（耗时：0.0480秒） [XML]
When should I use Struct vs. OpenStruct?
In general, what are the advantages and disadvantages of using an OpenStruct as compared to a Struct? What type of general use-cases would fit each of these?
...
Meaning of “[: too many arguments” error from if [] (square brackets)
I couldn't find any one simple straightforward resource spelling out the meaning of and fix for the following BASH shell error, so I'm posting what I found after researching it.
...
Convert objective-c typedef to its string equivalent
Assuming that I have a typedef declared in my .h file as such:
21 Answers
21
...
How to get the system uptime in Windows? [closed]
I am using windows 7 and xp. I want to know the uptime of the system.
3 Answers
3
...
How do I print to the debug output window in a Win32 app?
I've got a win32 project that I've loaded into Visual Studio 2005. I'd like to be able to print things to the Visual Studio output window, but I can't for the life of me work out how. I've tried 'printf' and 'cout
...
jQuery AJAX submit form
I have a form with name orderproductForm and an undefined number of inputs.
20 Answers
...
How to set top-left alignment for UILabel for iOS application?
I have added one label in my nib file, then its required to have top-left alignment for that lable. As I am providing text at runtime so its not sure that how much lines there are.
So if text contains only single line then it appears as vertical-center aligned. That alignment is not matching with my...
Browsing Folders in MSYS
This will be the toughest question of the day. How do I navigate through my Windows folder structure within the MSYS shell? When I start the shell, all I see is a '~'. I type 'ls' and the folder is empty. I just want to know how to get to my c drive.
...
while (1) Vs. for (;;) Is there a speed difference?
...
In perl, they result in the same opcodes:
$ perl -MO=Concise -e 'for(;;) { print "foo\n" }'
a <@> leave[1 ref] vKP/REFC ->(end)
1 <0> enter ->2
2 <;> nextstate(main 2 -e:1) v ->3
9 <2> lea...
Create a variable name with “paste” in R?
...
You can use assign (doc) to change the value of perf.a1:
> assign(paste("perf.a", "1", sep=""),5)
> perf.a1
[1] 5
share
|
improve this answer
...